Linux kernel SNMP NAT helper snmp_trap_decode() denial of service
| linux-snmp-nathelper-dos (26594) |  Low Risk |
Description:
The Linux kernel SNMP NAT helper could allow a remote attacker to cause a denial of service caused by a memory corruption vulnerability in the snmp_trap_decode() function. If the ip_nat_snmp_basic module is loaded and traffic is being NATed on port 161 or 162, a remote attacker could exploit this vulnerability to cause the system to crash.
Platforms Affected:
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Canonical, Ubuntu 6.06 LTS
- Debian, Debian Linux 3.1
- Linux, Kernel 2.6.0 test9
- Linux, Kernel 2.6.0 test8
- Linux, Kernel 2.6.0 test7
- Linux, Kernel 2.6.0 test6
- Linux, Kernel 2.6.0 test5
- Linux, Kernel 2.6.0
- Linux, Kernel 2.6.0 test3
- Linux, Kernel 2.6.0 test2
- Linux, Kernel 2.6.0 test11
- Linux, Kernel 2.6.0 test10
- Linux, Kernel 2.6.0 test1
- Linux, Kernel 2.6.0 test4
- Linux, Kernel 2.6.1 rc3
- Linux, Kernel 2.6.1
- Linux, Kernel 2.6.1 rc1
- Linux, Kernel 2.6.1 rc2
- Linux, Kernel 2.6.10
- Linux, Kernel 2.6.10 rc1
- Linux, Kernel 2.6.10 rc2
- Linux, Kernel 2.6.10 rc3
- Linux, Kernel 2.6.11 rc2
- Linux, Kernel 2.6.11
- Linux, Kernel 2.6.11 rc1
- Linux, Kernel 2.6.11 rc3
- Linux, Kernel 2.6.11 rc5
- Linux, Kernel 2.6.11 rc4
- Linux, Kernel 2.6.11.1
- Linux, Kernel 2.6.11.10
- Linux, Kernel 2.6.11.11
- Linux, Kernel 2.6.11.12
- Linux, Kernel 2.6.11.2
- Linux, Kernel 2.6.11.3
- Linux, Kernel 2.6.11.4
- Linux, Kernel 2.6.11.5
- Linux, Kernel 2.6.11.6
- Linux, Kernel 2.6.11.7
- Linux, Kernel 2.6.11.8
- Linux, Kernel 2.6.11.9
- Linux, Kernel 2.6.12 rc6
- Linux, Kernel 2.6.12 rc5
- Linux, Kernel 2.6.12
- Linux, Kernel 2.6.12 rc1
- Linux, Kernel 2.6.12 rc2
- Linux, Kernel 2.6.12 rc3
- Linux, Kernel 2.6.12 rc4
- Linux, Kernel 2.6.12.1
- Linux, Kernel 2.6.12.12
- Linux, Kernel 2.6.12.2
- Linux, Kernel 2.6.12.22
- Linux, Kernel 2.6.12.3
- Linux, Kernel 2.6.12.4
- Linux, Kernel 2.6.12.5
- Linux, Kernel 2.6.12.6
- Linux, Kernel 2.6.13 rc7
- Linux, Kernel 2.6.13 rc6
- Linux, Kernel 2.6.13 rc5
- Linux, Kernel 2.6.13 rc4
- Linux, Kernel 2.6.13 rc3
- Linux, Kernel 2.6.13 rc2
- Linux, Kernel 2.6.13 rc1
- Linux, Kernel 2.6.13
- Linux, Kernel 2.6.13.1
- Linux, Kernel 2.6.13.2
- Linux, Kernel 2.6.13.3
- Linux, Kernel 2.6.13.4
- Linux, Kernel 2.6.13.5
- Linux, Kernel 2.6.14 rc5
- Linux, Kernel 2.6.14 rc4
- Linux, Kernel 2.6.14 rc2
- Linux, Kernel 2.6.14 rc3
- Linux, Kernel 2.6.14 rc1
- Linux, Kernel 2.6.14
- Linux, Kernel 2.6.14.1
- Linux, Kernel 2.6.14.2
- Linux, Kernel 2.6.14.3
- Linux, Kernel 2.6.14.4
- Linux, Kernel 2.6.14.5
- Linux, Kernel 2.6.14.6
- Linux, Kernel 2.6.14.7
- Linux, Kernel 2.6.15
- Linux, Kernel 2.6.15 rc2
- Linux, Kernel 2.6.15 rc1
- Linux, Kernel 2.6.15 rc3
- Linux, Kernel 2.6.15 rc7
- Linux, Kernel 2.6.15 rc6
- Linux, Kernel 2.6.15 rc5
- Linux, Kernel 2.6.15 rc4
- Linux, Kernel 2.6.15.1
- Linux, Kernel 2.6.15.11
- Linux, Kernel 2.6.15.2
- Linux, Kernel 2.6.15.3
- Linux, Kernel 2.6.15.4
- Linux, Kernel 2.6.15.5
- Linux, Kernel 2.6.15.6
- Linux, Kernel 2.6.15.7
- Linux, Kernel 2.6.16 rc6
- Linux, Kernel 2.6.16 rc5
- Linux, Kernel 2.6.16 rc7
- Linux, Kernel 2.6.16
- Linux, Kernel 2.6.16 rc4
- Linux, Kernel 2.6.16 rc3
- Linux, Kernel 2.6.16.1
- Linux, Kernel 2.6.16.10
- Linux, Kernel 2.6.16.11
- Linux, Kernel 2.6.16.12
- Linux, Kernel 2.6.16.13
- Linux, Kernel 2.6.16.14
- Linux, Kernel 2.6.16.15
- Linux, Kernel 2.6.16.16
- Linux, Kernel 2.6.16.17
- Linux, Kernel 2.6.16.18
- Linux, Kernel 2.6.16.2
- Linux, Kernel 2.6.16.3
- Linux, Kernel 2.6.16.4
- Linux, Kernel 2.6.16.5
- Linux, Kernel 2.6.16.6
- Linux, Kernel 2.6.16.7
- Linux, Kernel 2.6.16.8
- Linux, Kernel 2.6.16.9
- Linux, Kernel 2.6.2 rc3
- Linux, Kernel 2.6.2 rc2
- Linux, Kernel 2.6.2 rc1
- Linux, Kernel 2.6.2
- Linux, Kernel 2.6.3 rc2
- Linux, Kernel 2.6.3 rc1
- Linux, Kernel 2.6.3 rc3
- Linux, Kernel 2.6.3
- Linux, Kernel 2.6.3 rc4
- Linux, Kernel 2.6.4
- Linux, Kernel 2.6.4 rc2
- Linux, Kernel 2.6.4 rc1
- Linux, Kernel 2.6.4 rc3
- Linux, Kernel 2.6.5
- Linux, Kernel 2.6.5 rc3
- Linux, Kernel 2.6.5 rc2
- Linux, Kernel 2.6.5 rc1
- Linux, Kernel 2.6.6
- Linux, Kernel 2.6.6 rc1
- Linux, Kernel 2.6.6 rc2
- Linux, Kernel 2.6.6 rc3
- Linux, Kernel 2.6.7
- Linux, Kernel 2.6.7 rc1
- Linux, Kernel 2.6.7 rc2
- Linux, Kernel 2.6.7 rc3
- Linux, Kernel 2.6.8
- Linux, Kernel 2.6.8 rc4
- Linux, Kernel 2.6.8 rc2
- Linux, Kernel 2.6.8 rc3
- Linux, Kernel 2.6.8 rc1
- Linux, Kernel 2.6.8.1
- Linux, Kernel 2.6.9
- Linux, Kernel 2.6.9 rc4
- Linux, Kernel 2.6.9 rc3
- Linux, Kernel 2.6.9 rc1
- Linux, Kernel 2.6.9 rc2
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2006
- Novell, Linux Desktop 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- Novell, UnitedLinux 1.0
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 AS
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SuSE, Linux Enterprise Server 8
- SuSE, SuSE Linux 10.1
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux Desktop 1.0
- SuSE, SuSE Linux OpenExchange Server 4
- SuSE, SuSE Linux Retail Solution 8
- SuSE, SuSE Linux School Server
- SuSE, SuSE Linux Standard Server 8
- SuSE, SuSE SLES 9
- Volition, Red Faction 1.0
Remedy:
Upgrade to the latest version of Linux kernel (2.6.16.18 or later), available from The Linux Kernel Archives Web site. See References.
For Red Hat Linux:
Refer to RHSA-2006:0437-22 and RHSA-2006:0580-7 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux 4:
Refer to RHSA-2006:0617-15 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux:
Refer to DSA-1183-1 or DSA-1184-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:047 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:064 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- IBM Systems Support Web site, Support for HMC at https://www14.software.ibm.com/webapp/set2/sas/f/hmc/power5/install/v61.Readme.html#MH01110.
- The Linux Kernel Archives Web site, ChangeLog-2.6.16.18 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.18.
- The Linux Kernel Archives Web site, The Linux Kernel Archives at http://kernel.org/.
- ASA-2006-143: kernel security update (RHSA-2006-0580)
- ASA-2006-180: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8 (RHSA-2006-0437)
- ASA-2006-203: kernel security update (RHSA-2006-0617)
- BID-18081: Linux Kernel SNMP NAT Helper Remote Denial of Service Vulnerability
- CVE-2006-2444: The snmp_trap_decode function in the SNMP NAT helper for Linux kernel before 2.6.16.18 allows remote attackers to cause a denial of service (crash) via unspecified remote attack vectors that cause failures in snmp_trap_decode that trigger (1) frees of random memory or (2) frees of previously-freed memory (double-free) by snmp_trap_decode as well as its calling function, as demonstrated via certain test cases of the PROTOS SNMP test suite.
- DSA-1183: kernel-source-2.4.27 -- several vulnerabilities
- DSA-1184: kernel-source-2.6.8 -- several vulnerabilities
- MDKSA-2006:087: Updated kernel packages fixes netfilter SNMP NAT memory corruption
- OSVDB ID: 25750: Linux Kernel SNMP NAT Helper snmp_trap_decode() Function DoS
- RHSA-2006-0437: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8
- RHSA-2006-0580: kernel security update
- RHSA-2006-0617: kernel security update
- SA20225: Linux Kernel SNMP NAT Helper Denial of Service
- SA21983: Avaya Products Linux Kernel Multiple Vulnerabilities
- SA22174: Avaya Products Linux Kernel Multiple Vulnerabilities
- SECTRACK ID: 1016153: Linux Kernel Netfilter SNMP NAT Memory Bug Lets Remote Users Deny Service
- SUSE-SA:2006:042: kernel local privilege escalation
- SUSE-SA:2006:047: kernel security problems
- SUSE-SA:2006:064: Linux kernel 2.4 security problems
- US-CERT VU#681569: Linux Kernel may fail to properly handle SNMP packets
- USN-302-1: Linux kernel vulnerabilities
- VUPEN/ADV-2006-1916: Linux Kernel snmp_trap_decode() Remote Memory Corruption Vulnerability
Reported:
May 22, 2006
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